LSGunZ28

iTrader: (8)

Ok here is the deal I got to enjoy my H/C car for 1 day before I had issues.

changed the fuel pump, still wouldnt start.

changed the crank sensor, still wouldnt start

I had it towed to my tuner and theyve been checking for days. I just got the news that my reluctor wheel is destroyed..

So now Im gonna need to take off the crank, so that means everything is gonna come apart..

He told me I might as well get all new parts..

So what I was thinking is, since Im gonna rebuild it. Might as well go with a 4" stroke crank... and make it a 383..

and Im gonna use forged parts

Car will see N/A Use and maybe now nitrous in the future.. who knows.

But currently I think I wanna keep it N/A...




I just wanna know the following:

- I have a Torquer v3 cam (231/234 111LSA) in my LS1, if I do a stroker. Will it be more driveable? or does that cam not match at all the bore/stroke engine combo Im gonna be having?

I dont wanna spend anymore money than I have to, thats why I think I wanna keep that cam...

(I know Im gonna keep those heads, and all the valvetrain because its brand new, Just need new headbolts... )

- What are the disadvantages to a stroker? I will be road racing the car a couple times a year, maybe 3 - 4 times.. So a longer stroke means more mean piston speed. Is this okay, for road racing if Im only gona be going very few times a year?


and im guessing I might as well get new fuel injectors, new coil packs..

This kind of sucks, because I was planning on driving it with head/cam for 20,000 miles or so, then getting a LS7, but Now I gotta rebuild it. So I can just forget the LS7 and go bigger displacement by stroke, because Im forced to rebuild it now

LSGunZ28

iTrader: (8)

Hello???

shoemike

iTrader: (25)

don`t spend more than you need/want to.
if you are going to do a stroker go with some kind
of LS2 short block they are cheap and will have more potential.
i did my 383 in `04 when it was the only option for an aluminum block.
and for what i spent i wish i waited another year to get the LS2
so i could have 500rwhp instead of 460rwhp with a small street cam.
IMO

LSGunZ28

iTrader: (8)

If I rebuild my LS1 I will only have to spend money on...

Pistons, rings, rods, wristpins, rodbolts, crankshaft, bearings, oil pan gasket, maybe oil pan...

maybe a camshaft..

But I can keep my 5.3 stage 2.5 heads..

If I go with an LS2, Im paying for a new block as well as the heads wont be compatible, at least I dont think so... If they are compatible, then Id go with a brand new block, no problem... and then for sure a new cam

shoemike

iTrader: (25)

don`t under estimate labor and misc parts.
you can always sell your used stuff.
you could also get a 347 shorty on the cheap for what a rebuild would cost.
i`m saying 383 isn`t the best way to go these days, and you will
want a cam to fit, don`t go cheap on the cam i found that out the hard way. LOL
in the end it`s up to you.
good luck.

LSGunZ28

iTrader: (8)

Okay, well if I had it my way, Id want a 4.25" bore and 3.85" stroke, but I havent seen any Aluminum LSx blocks do that.

So Im gonna have my 3.898" bore and 3.622" stroke or 4.00" stroke...

Id buy an LS2 block if my heads will work with that block... will they? the stage 2.5 5.3s.... theyre 862 castings I believe..

If they dont go with a 4" bore, I dunno, then I might as well rebuild a 383 at the moment.. I mean why is the 383 not the best choice? Its been said, but no one explained why...

Top Fuel

iTrader: (8)

Your heads will work with a LS2 block. I remember a while back someone had thrown a set of AFR 205's on a 402 and it was a torque monster.

davered00ss

iTrader: (4)

Your heads will work on an ls2. you can get an LS2 402 from Texas speed for $4050 right now. Price for blocks is relativly cheap.

Mike94ZLT1

iTrader: (3)

I went the 383 route when I popped my 346. In hindsight I wish I spent the few hundred extra and built a 402. I love my 383 it makes good power, but I want a 402.

david vericker

iTrader: (1)

I like my 383 and my present set up makes great power. However, there are advantages to the 402 with the larger bore... the valves are less shrouded which improves the efficiency of the heads,this makes for a better NA combo.

Put together a cost (price-parts should be apples to apples) list for both the 383 and the 402 combos and make your decision based on budget and desired performance.Either way you choose it's going to be an improvment over the stock 346.

kars10_4

Listening in on the benefits of 383 vs. 402 and price diff

snatch

iTrader: (4)

Will the 5.3L 2.5's flow well enough for a 402? I was also looking into a 383 because I thought my heads and cam would be a better match for a 383 and would cut down on the price in the long run.

Will everything transfer over to the 402 block or will there be a bunch of odds and ends that are needed?
Thanks,
Shane

redz_02

iTrader: (4)

Yeah, but your probably loving the torque of that 383. You could have always used the 6.0 L truck block, much better for a power adder.

snatch

iTrader: (4)

Bump.
Thanks,
Shane

Camaro99SS

iTrader: (4)

Yes they'll work. One thing you may consider though is to have the head chambers ported a little to take them to a 4" bore if you go with a 402. This will make the heads flow better without sacrificing velocity (torque, midrange), and it shouldn't cost that much. Call TSP about it.

I think you'll like a 383 better than a 347 for road racing. You'll have more torque and midrange, and the powerband will be more "useable", allowing you to also use taller gearing. Driveability with a big cam improves. If spending an extra $500 for the aftermarket crank is not an issue, go stroker. If not, build a nice 347, and don't sweat it.

Jason

LSGunZ28

iTrader: (8)

Thanks for the reply fellas..

Im really excited for the 402, except I still wanna know if the heads will flow well enough for a 402. If so, then Id definitely consider it!

Also, I dont wanna push it, but can I go even bigger bore than a LS2, or will this just not work?

If not, then I wanna go 402

4" bore and stroke... I only need a new cam, besides the brand new block and heads. and Im fine with that...

will a Fast 90/90 be acceptable for a DD?

I dont wanna go with a mid/large cam with the 402. because I didnt like how the TV3 felt at lower rpms with my 346, so I wanna go just mild cam maybe on the 402, what are good choices. I never really looked into mild cams for 402s, because I never anticipated my engine to not run

LSGunZ28

iTrader: (8)

OH man TSP has a new 92mm fast 90/90. I wonder if thats perfect for my application??!?!?!

jessedale98

iTrader: (16)

I have a forged setup if your interested. Real cheap

LSGunZ28

iTrader: (8)

I may or may not be at the moment, can you gove me more information please...

jessedale98

iTrader: (16)

Polished GM Crank
Probe Ultralight 6.125" Forged I beam Rods-
Ross 3.905 Forged Pistons 4cc Reliefs
Diamond Rings Gapped @ .029 and .032
King Alecular Rod Bearings
Clevite 3/4 Groove Main Bearings
Clevite Cam Bearings

Reason for selling is that I was having it installed when the mechanics cracked a waterjacket on my ls6 block. The parts have only 500 miles on them, and are in perfect working condition. Its just the block has a crack in a head bolt. Pics are available.